Senior Backend Developer at Acorn Insurance and Financial Services Limited
Base pay range: £65,000 - £75,000 depending on experience.
We’re looking for a passionate Senior Backend Developer who thrives on solving complex problems and building systems that scale. You’ll be at the forefront of creating next‑generation backend services that genuinely make a difference for our customers and business. In this role, you’ll have the freedom to lead, the support to grow, and the chance to mentor others—because we believe learning and sharing knowledge are what make a team truly exceptional.
What You’ll Do
* Build and maintain scalable microservices in .NET 8.0 and Azure.
* Write clean, testable code with a focus on performance and maintainability.
* Collaborate with product owners and designers to shape features from concept to delivery.
* Participate in code reviews and mentor junior developers.
* Architect robust APIs and database solutions with clean, maintainable code.
* Deploy and manage applications using Docker and Azure cloud services.
* Contribute ideas, share feedback, and grow together with a team that values openness and collaboration.
* Bonus: Demonstrate Understanding of Clean Architecture and MediatR Pattern.
Technical Stack
* Backend: C#, .NET 8.0, ASP.NET Core
* Database: SQL Server, Entity Framework
* Infrastructure: Docker, Azure
* Tools: Unit and Integration Testing, Git, Agile methodologies
What We’re Looking For
* Proven senior‑level experience building microservices running on Docker.
* Expertise in C#, .NET 8.0, and ASP.NET Core.
* Strong experience with SQL Server and Entity Framework.
* Hands‑on experience with unit and integration testing.
* Excellent communication skills and strong collaboration mindset.
* Passion for mentoring others, sharing ideas, and helping the whole team level up.
* Self‑motivated, problem‑solving mindset, and enthusiasm for building robust, scalable systems.
* Understanding of Clean Architecture and MediatR Pattern preferred but not mandatory.
Bonus Points For
* Understanding of Clean Architecture and MediatR Pattern.
* Solid grasp of asynchronous communication in distributed systems.
* Experience with high‑throughput, data‑intensive systems.
* Contributions to systems utilising Event‑Driven Architecture.
Why Join Us?
* Modern tech stack and a strong culture of engineering excellence.
* Hybrid working options within the UK.
* Career progression into tech leadership or architecture.
* Supportive environment with clear standards and plenty of opportunity to innovate.
Benefits
Wellbeing: Enhanced annual leave entitlement starting at 31 days and potentially increasing to 35 days per year (including bank holidays); enhanced paternity pay and 16 weeks full maternity pay.
Financial: Core level of life assurance with the option to increase cover via salary sacrifice and add your spouse/partner; ability to access earnings before payday via Dayforce Wallet; scheme with a £250 bonus for each colleague recommended who passes probation; flexible benefits platform with an annual flex pot allowance to spend on over 15 benefits of your choice; opt‑in to donate to charity or climate‑positive organisations directly from salary.
Reward & Recognition: Long Service Award paid on 5, 10, and 15 years’ service; reward and recognition hub; consistent company events including awards, competitions, and charity fundraisers; department budgets for social and engagement events.
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Information Technology
Industry
IT Services and IT Consulting
All roles are subject to DBS and Financial checks. Any offer made will be conditional until checks are completed to a satisfactory standard.
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